DataTableViewportMetrics class final

Current viewport geometry for a rendered DataTable.

DataTable uses these metrics to keep mouse hit selection aligned with the rows and columns that the render island actually painted.

Constructors

DataTableViewportMetrics({required int visibleFirst, required int visibleRows, required int bodyTop, required List<int> columnStarts, required List<int> columnWidths, required int tableWidth})
const

Properties

bodyTop → int
final
columnStarts → List<int>
final
columnWidths → List<int>
final
hasBodyRows → bool
Whether the current viewport contains hit-testable body rows.
no setter
hashCode → int
The hash code for this object.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
tableWidth → int
final
visibleFirst → int
final
visibleRows → int
final

Methods

columnAt(int localCol) → int?
Returns the rendered column at localCol, or null when the pointer is in a spacing gap or outside all column bodies.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited

Constants

empty → const DataTableViewportMetrics
Empty viewport used before layout or when no rows are visible.